<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>chat</title>
    <script type="text/javascript" src="js/jquery.min.js"></script>
    <script>

    </script>
</head>
<body>
<a href="index3">点击我跳转到index3页面</a>
</body>
</html>